General Science - Physics

Welcome to General Science – Physics MCQ series of GKToday. As of today February 26, 2020, this series has 590 Questions. You may purchase a PDF E-Book compilation comprising all these questions and their answers with explanation from this link.

71. What is the splitting of light into its colours known as?
[A] Diffusion
[B] Dispersion
[C] Refraction
[D] None of the above

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72. What is the work done to move a unit charge from point to another called as?
[A] Current
[B] Resistance
[C] Conductance
[D] Potential Difference

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73. Which of the following is true about the force between two point charges as per the Coulomb’s law?
[A] inversely as the square of the distance between the charges
[B] directly proportional to the product of the magnitude of the two charges
[C] Both a and b
[D] None of the above

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74. What is the total charge of the electric dipole?
[A] 0
[B] -1
[C] +1
[D] None of the above

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75. What do we call the rate at which electric energy is dissipated or consumed in an electric circuit?
[A] Conductance
[B] Power
[C] Resistance
[D] Potential Difference

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76. What is the equivalent internal resistance of a series combination of n cells?
[A] the arithmetic mean of their internal resistance
[B] the product of their individual internal resistance
[C] the sum of their individual internal resistance
[D] the sum of the reciprocal of their individual internal resistance

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77. What do we call a device which generates electric energy using chemical energy?
[A] Potentiometer
[B] Resistor
[C] Cell
[D] Metre bridge

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78. What is the direction of current through electrolyte in a galvanic cell?
[A] flows from cathode to anode
[B] flows from anode to cathode
[C] flows in both direction
[D] None of the above

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79. Which of the following is correct about magnetic field lines?
[A] Magnetic field lines are closed curves
[B] Degree of closeness of the field lines shows the strength of the magnetic field
[C] Both a and b
[D] None of the above

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80. Which of the following is NOT a natural magnet?
[A] lodestone
[B] pyrrhotite
[C] columbite
[D] titanium

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